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Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994.
No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

PHOSPHORUS PENTOXIDE

ICSC: 0545

I

M

P

O

R

T

A

N

T

D

A

T

A

PHYSICAL STATE; APPEARANCE:
HYGROSCOPIC
,
WHITE
CRYSTALS
OR POWDER.

PHYSICAL DANGERS:

CHEMICAL DANGERS:
The solution in water is a strong acid, it reacts violently with bases and is corrosive.
Reacts
violently with perchloric acid
causing fire and explosion hazard.
Reacts violently with water to produce phosphoric acid.
Attacks many metals in presence of water.

ROUTES OF EXPOSURE:
The substance can be absorbed into the body
by inhalation of its aerosol
and
by ingestion.

INHALATION RISK:
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance
is very corrosive to
the eyes,
the skin
and
the respiratory tract.
Corrosive on ingestion.
Inhalation of dust of this substance may cause lung oedema (see Notes).
The effects may be delayed.
Medical observation is indicated.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:

PHYSICAL PROPERTIES

ENVIRONMENTAL DATA

N O T E S

Reacts violently with fire extinguishing agents such as water.
The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation is therefore essential.
Immediate administration of an appropriate inhalation therapy by a doctor or a person authorized by him/her, should be considered.
NEVER pour water into this substance; when dissolving or diluting always add it slowly to the water.
Card has been partly updated in October 2005 & 2006. See sections: Occupational Exposure Limits, Emergency Response.

Transport Emergency Card: TEC (R)-80GC2-II+III

NFPA Code: H2; F0; R2;

ADDITIONAL INFORMATION

ICSC: 0545

PHOSPHORUS PENTOXIDE

(C) IPCS, CEC, 1994

IMPORTANT LEGAL NOTICE:

Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.